Thursday, September 30, 2010

Synth Repair Services

Since I'm no longer part of Analog Sweden I'm offering my services for vintage synth repairs, if you had a repair done there over the past 20 months then you'll already know my work.

I'm offering very competitive rates and to get the ball rolling I will beat any competitors quote. So if you are in need of any kind of analog synth repair work drop me a line on and let me know what the problem is you are having. I'll get right back to you with my thoughts on what to do or how much it may cost to repair.

I've lots of experience with vintage gear, here's a list of just some of the machines I've worked on over the last 12 months

Arp 2600
Jen SX-2000
Korg MS-10
Korg MS-20
Korg MS-50
Korg SQ-10
Korg 900ps
Korg Trident
Korg Polysix
Korg Monopoly
Moog Minimoog
Moog Memorymoog
Oberheim Four Voice/Eight Voice/SEM
Oberheim OBX
Oberheim OBXa
Roland Juno-106
Roland JX3P
Roland MC-202
Roland SH-101
Roland SH-2000
Roland System 100 - 101
Roland System 100 - 102
Roland TB-303
Roland TR-606
Roland TR-808
Roland TR-909
Roland VP-330
Sequential Circuits Pro One
Sequential Circuits Prophet 5
Sequential Circuits Prophet 2000
Sequential Circuits Prophet T8
Sequential Circuits Prophet VS
Yamaha CS-60
Yamaha CS-70

Sunday, September 5, 2010

Roland SH-101 Modifications

You can wire the LFO outputs direct from the rear of the LFO selection knob at these points. Wire the tip of the jack to the point in question and wire the sleeve of the jack to a convienient ground.

You can wire the oscillator outputs direct from the rear of the source mixer faders at these points. Wire the tip of the jack to the point in question and wire the sleeve of the jack to a convienient ground, with the VCF cutoff cv, add a 100k resistor in line to the tip of the jack. To wire up the triange output, simply wire the tip of the jack to pin 10 on the CEM3340 ic. (this is done exactly the same as it is for the MC202 vesrion of this mod, details here)

work in progress...

all done.

6th September UPDATE

I added this picture of my ground wire (red wire center of the pic.) As you can see theres a nice little ground symbol marked on the control board. I found this to be the best place to take ground from for this mod. Also your connection wires should be shielded wire, leave the ground floating at the pcb end (you'll see mine have some heat shrink tubing to insulate the shield from touching the board and connect the shield at the jack end, this will create nice little rf jackets for your "live" wires. If you don't use shielded wire you'll end up with some bleed through from the circuits.